MANCHESTER, England -- A crushing defeat was about to be confirmed for Manchester City when Sergio Aguero flew into a knee-high challenge and Fernandinho grabbed a goading opponent by the throat in an ensuing melee, shoving him over an advertising hoarding.Citys players didnt just lose a match to a big title rival. They lost their heads.In a feisty, action-packed game between two of the Premier Leagues heavyweights, Chelsea scored three goals in the final half-hour and rallied for a 3-1 win at City on Saturday.It was an eighth straight victory for the leaders, all of them coming since their coach, Antonio Conte, switched to a 3-4-3 formation that is making the team irresistible going forward. City dropped four points behind Chelsea in fourth place.Aguero and Fernandinho, two mainstays of Pep Guardiolas City team, were both red-carded in those unedifying final seconds that saw tempers flare and both sets of players pushing and shoving on the field. Aguero is set to miss the next four matches for his lunge on David Luiz, because it was his second sending-off this season.Diego Costa sparked the turnaround for Chelsea, canceling out a 45th-minute own goal by teammate Gary Cahill with an equalizer in the 60th after chesting down Cesc Fabregas long ball.Costa set up substitute Willian to put Chelsea ahead in the 70th and Eden Hazard added a third in the 90th, before Agueros tackle on Luiz sparked the late skirmishes.Heres a look at what else happened in the Premier League on Saturday, which ended with Chelsea holding a three-point lead over second-placed Arsenal:---WEST HAM 1, ARSENAL 5Arsenal forward Alexis Sanchez displayed his mesmerizing skills in scoring a 15-minute hat trick against injury-hit West Ham at the London Stadium.Arsenal was leading 1-0 through Mesut Ozils 24th-minute goal, which was set up by Sanchez, when the Chile international began his spree. A brilliant individual effort in the 72nd minute was followed by a low strike from outside the area in the 80th, before he ran through and chipped the goalkeeper to complete his hat trick in the 86th.Alex Oxlade-Chamberlain was Arsenals other scorer.West Ham lost central defender James Collins in the opening minutes, causing a change of formation and extending an absentee list that grew this week with injuries to Diafra Sakho, Aaron Cresswell and Michail Antonio.Andy Carroll replied for West Ham on his first match back from injury.---TOTTENHAM 5, SWANSEA 0The respite was brief for Swanseas American coach, Bob Bradley.A week after finally earning his first win in charge of the Welsh club, Bradley saw his side overwhelmed by Tottenham and return to the bottom of the 20-team standings.Harry Kane and Christian Eriksen both scored twice for Spurs at White Hart Lane, with Son Heung-min netting the other with an acrobatic strike.---SUNDERLAND 2, LEICESTER 1Leicester lost for the seventh time in 14 matches of its disappearing title defense.Jermain Defoes eighth goal of the season ultimately condemned Leicester to a defeat that kept the champions two points above the bottom three.Sunderland is still in the relegation zone despite winning three of its last four games.Defoe struck in the 77th minute after Robert Huths own goal gave the home side the lead at Stadium of Light in the 64th. Substitute Shinji Okazaki pulled a goal back for the visitors in the 80th.---OTHER RESULTSCrystal Palace beat Southampton 3-0 thanks to two goals by Christian Benteke and another by James Tomkins, ending a run of six straight losses that had heaped pressure on manager Alan Pardew.West Bromwich Albion won 3-1 at home to Watford and climbed into sixth place, ahead of Manchester Uniteds match at Everton on Sunday.Stoke beat Burnley 2-0. Cheap Adidas NHL Jerseys . LOUIS -- Cardinals cleanup hitter Allen Craig says hes recovered from a foot injury and ready to be put on St. Wholesale NHL Jerseys Authentic .7 million, one-year contract, a raise of $2.2 million. Wieters had asked for $8.75 million and the Orioles had offered $6. http://www.wholesalenhljerseys.us/ . LOUIS -- Lance Lynn was one of the more enthusiastic participants as the St. Wholesale Hockey Jerseys China . There was no hesitation from the 40th-ranked Pospisil, from Vernon, B.C., who admitted that he cut back on his training sessions over the last few days to conserve energy as the long ATP season finishes next week at the Paris Masters. Cheap NHL Jerseys Free Shipping . Argentina winger Ezequiel Lavezzi and France midfielder Blaise Matuidi scored, with star striker Zlatan Ibrahimovic setting up both despite having a poor game by his high standards. Forward Eduardo gave Ajaccio the lead in the sixth minute after being set up by right winger Benjamin Andre, and the Corsican side looked comfortable in the first half, with the lively Johan Cavalli causing problems with his probing runs from midfield.In his weekly column, Sky Sports Spanish football expert Guillem Balague looks ahead to Arsenal’s Champions League tie with Barcelona and answers your questions on Pierre-Emerick Aubameyang, Cristiano Ronaldo and Gary Neville... The cover of Mondays edition of Sport said it all. A picture of a crestfallen Cristiano Ronaldo on the ground with the caption The End underneath. It appears Real Madrids season is over, in La Liga at least.Madrids draw at Malaga could inadvertently help the Spanish sides focus their attention on the Champions League, with Barcelona seemingly out of reach and Real and Atletico not involved in the latter stages of the Copa del Rey. When the likes of Gerard Pique and Sergio Busquets are missing for Barca, as they were against Las Palmas, the team doesnt play well, but it still has a dynamism up front to make up for it. That was the case in Gran Canaria and well have to keep an eye on the progression of the team, both physically and mentally, as the big challenges continue to come thick and fast.Despite this, you have to say Barca are favourites in every competition this season. Bayern Munich, and even Real Madrid, will be in contention in Europe too but Barca quite clearly have ability to win playing well and, crucially, when playing badly.Looking at the stats ahead of Tuesdays game at the Emirates, Arsene Wenger has only beaten Barcelona once during his managerial spells at Arsenal and Monaco - a 2-1 last-16 victory in 2011. Two Lionel Messi goals in the Camp Nou secured a 3-1 second-leg triumph for Pep Guardiolas side as they progressed into the quarter-finals, before going on to win the trophy at Wembley later that year. Nicklas Bendtner and Andrey Arshavin celebrate scoring the winner against Barcelona in 2011 Barcelona will happily play possession football against teams that allow them to do so, teams that are not constructed to defend collectively or fail to defend with the same passion, commitment or aggression with which Barca attack. If teams simply challenge Barcelona to break them down - which I suspect Arsenal may do - they will overcome that passive defensive style.Ultimately, though, the game will boil down to how effective the front three of Messi, Suarez and Neymar are. Arsenal have never been renowned for defending well enough collectively, especially in the higher reaches of Europes elite-club competition, so it will be interesting to see how they set up. Can Arsenal subdue Barcas formidable attacking trio? In my opinion there are two ways to beat Barcelona. The first is to employ a high press in certain phases of the game, while the second would be to pressurise very deep, killing the spaces and hoping, praying that the front three are not effective. At the moment I think Arsenal are going to employ something in between those two, and that could hurt them.Arsenal are not used to being on top of a team defensively so, for that reason, I fear Barca will prevail over the two legs, even if Arsenal make an impact in the first leg. Arsene Wenger insists Arsenal are prepared to face Lionel Messi, Luis Suarez and Neymar when they play Barcelona in the Champions League In Spain, people have got the impression that Arsenal are a team that is very similar to Barcelona - a team that enjoys possession and a positional game. In reality, they are actually not similar. In the first round of this seasons Champions League, Arsenal are 10th in the passing percentage charts and 13th in the overall possessiion standings.ddddddddddddI would say Arsenal have become a team that prefers to counter attack with pace as they are not that comfortable in possession as they once were. Nevertheless, I am looking forward to an intriguing game, a game which Barca head into as clear favourites.Guillem answers your questionsPierre-Emerick Aubameyang has been revealed his desire for Real Madrid. Will it happen this summer? @Shantanu3196 Pierre-Emerick Aubameyang staying at Dortmund, says Guillem It is almost impossible for this deal to happen in the summer. He is under contract at Dortmund until 2020 and the Bundesliga club have no intention of letting him go.Do you think Real can/will lure Neymar? @AfraLaffar Neymar will not go to Real Madrid, but that doesnt mean theyll give up trying to sign him! They have tried through different channels to try and get him but its a fruitless task.Can Real realistically challenge Barcelona with Ronaldo staying until the end of contract? @FDC_CoachPeter Cristiano Ronaldo sits on the field during the game with Malaga I completely agree, Real Madrid needs to move on the Cristiano Ronaldo era. The stories surfacing at the moment suggest that Real and Ronaldo have tried to look for a way out this summer. The FIFA-imposed transfer ban leaves Real in a dilemma. If they decide to keep Ronaldo until the summer, the ban could see him stay for another year, so its either get rid of him now or in two years. I must stress, though, at this particular time nobody is willing to pay what it would take to sign Ronaldo, which currently stands at 25m euros (£19.5m) net in wages, a long contract, and in excess of 60m euros (£46.7m) to Real Madrid.Is there any way you see Gary Neville staying or going somewhere else in management after this season? @RicardohhhhIf the team keep improving then Gary Neville could seriously consider staying at Valencia. A decision will be taken at the end of March. If they continue their recent form, he may well have a full pre-season and season at the Mestalla.Why is Unai Emery not seen as being in the mix for the Chelsea job? @AnupS9 Unai Emery has won back-to-back Europa League titles at Sevilla Unai Emery is not in the mix for the Chelsea job because Im not sure what Chelsea actually want! Im not sure Chelsea have decided what they want. Of course, they want to win, but if you compared Sir Alex Ferguson, Jose Mourinho, Pep Guardiola or Luis Enrique then there arent any similarities between successful managers. First and foremost, Chelsea have to decide what kind of club they want to be on the pitch, something which they havent got at the moment.What do you make of Zidanes managerial style so far, looks like players want to play for him? @0tryPlayers love to play with a manager they admire, a manager that doesnt put many tactical demands on the players and has got a good relationship with everybody. That, however, doesnt guarantee you victories and, in fact, the league has gone now and that is partly down to Zidanes managerial style.Who will Atleti look to sign in the summer to replace Jackson Martinez? @Asif__14 Atletico Madrid want to re-sign Diego Costa The plan is to get Diego Costa back to the Vicente Calderon.How much do you think Raul Albentosa is worth & any chance well see him in France this summer? @Walsall_RamMalaga want to keep him, I think hell only cost them around 1.5m euros (£1.2m). He may be worth more in the future but he wont be in France this summer. Get Sky Sports Alerts Breaking news, line ups and goal alerts from your football club - direct to your mobile Also See: Wenger: Lets go for it What happened to Arshavin? 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